Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question

How to model a split unit air conditioner in DesignBuilder?

asked 2022-05-02 11:12:03 -0500

fededea94's avatar

Hello everyone, I am trying to model an air conditioning split unit in DesignBuilder. How can I do that? Is there a built-in template? If not what is the alternative?

Thanks, Regards.

edit retag flag offensive close merge delete


You might raise a ticket to the DesignBuilder Support desk if such HVAC object is available. I tried it a few months ago, but there was no exact built-in template. You might check once PTAC if that satisfies your conditioning need.

Debayan93's avatar Debayan93  ( 2022-05-03 03:38:23 -0500 )edit

Thanks, I try to raise a ticket to DB Support and also check if with some PTAC I solve my problem.

fededea94's avatar fededea94  ( 2022-05-04 03:35:52 -0500 )edit

1 Answer

Sort by ยป oldest newest most voted

answered 2022-05-04 06:25:45 -0500

Dave's avatar

There are two "split unit" templates in DesignBuilder Simple HVAC. If you open the list of HVAC templates you will see them listed alphabetically. If you don't see them I'd suggest you install the latest version. If you are using Detailed HVAC, there are similar alternatives depending on the level of detail you need. Most spilt units operate with variable flow so the VRF template might be the best starting point and just delete the DOAS unit if not relevant.

edit flag offensive delete link more


Thanks a lot, I have used a custom template in simple HVAC and I used manual sizing and used data relative to the installed system. I also will try detailed with your indication. Have a good day

fededea94's avatar fededea94  ( 2022-05-05 03:45:00 -0500 )edit

When using detailed HVAC, I use the PTHP object to model split systems. The DX cooling coil is still air cooled, so if you are wanting to model a 1:1 split system, I think the PTHP is essentially the same thing.

Greg Estep's avatar Greg Estep  ( 2022-06-09 18:23:44 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops


Question Tools



Asked: 2022-05-02 11:12:03 -0500

Seen: 795 times

Last updated: May 05 '22